Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG), Menlo Park, CA. Publication_Date: 2010 Title: Monterey Bay SVP data from cruise S-07-09-MB and S-10-09-MB Edition: 1 Online_Linkage: http://pubs.usgs.gov/ds/514/ Description: Abstract: USGS Western Coastal & Marine Geology scientists mapped the Monterey Bay area from Ano Nuevo to Moss landing between August and December 2009 using a SEA SWATHplus interferometric sonar system. Data were collected as part of the cooperative California Seafloor Mapping program, during field activities S-7-09-MB and S-10-09-MB. Sound velocity profile (SVP) measurements were collected on average every two hours throughout the survey. A total of 438 SVPs were collected for this survey. 114 SVPs were collected during cruise S-7-09-MB and 324 SVPs were collected during S-10-09-MB. In general, SVPs were collected every 2 hours, or when the survey vessel moved to a different survey block. Typically two SVPs were collected every four lines. Water column sound velocity profiles varied significantly throughout the survey, however this frequency of SVP collection was sufficient to correct for variations in sound velocity. Only one line from cruise S-7-09-MB (BlockA_230_044) shows an artifact from an uncorrected sound velocity error (smile), for part of it's length. Insufficient sound velocity data were available to correct this line, and no attempt was made to synthesize data. SVPs were collected with an Applied Micro Systems, SvPlus 3472. This instrument provides time-of-flight sound velocity measurements using invar rods with a sound velocity accuracy of +/- 0.06 m/s, pressure measured by a semiconductor bridge strain gauge to an accuracy of 0.15% (Full Scale) and temperature measured by thermistor to an accuracy of 0.05 C (Applied Microsystems Ltd., 2005). In addition, an Applied Micro Systems Micro SV accurate to +/- 0.03 m/s was deployed on the transducer frame for real-time sound velocity adjustments at the transducer-water interface. Data in these data tables are recorded in the following fields: > #DateTime - date and timestamp for the SVP data > Pressure(dBars) - This field is actually water depth in meters > SoundVelocity(m/s) - Sound velocity in m/s > Temperature(C) - temperature in degrees C > Battery(Vdc) - battery voltage SVPs taken at this density comprise a largely unexplored dataset that provides insight into spatial and temporal temperature variation within the Monterey Bay National Marine Sanctuary between mid-August and late December, 2009. Purpose: California State Waters Mapping - Sound velocity profiles were taken to calibrate the speed of sound in water to ensure accurate mapping. Supplemental_Information: Information about August-September 2009 field activity data collection at . Information about October - December field activity data collection at . Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20090813 Ending_Date: 20091216 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -122.338797 East_Bounding_Coordinate: -121.785351 North_Bounding_Coordinate: 37.111583 South_Bounding_Coordinate: 36.793514 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificinformation Theme_Keyword: oceans Theme: Theme_Keyword_Thesaurus: USGS CMG InfoBank Theme_Keyword: geoscientific information Theme_Keyword: Theme_Keyword Theme_Keyword: oceans Theme_Keyword: Marine Geology Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Ano Nuevo Place_Keyword: Moss Landing Place_Keyword: Monterey Bay Place_Keyword: California Place_Keyword: Pacific Ocean Place: Place_Keyword_Thesaurus: USGS CMG InfoBank Place_Keyword: "Monterey Bay, CA" Place_Keyword: CA Place_Keyword: Monterey Bay Place_Keyword: Moss Landing to Ano Nuevo Place_Keyword: North Pacific Ocean Place_Keyword: Northern California Place_Keyword: Northern Pacific Ocean Place_Keyword: USA Access_Constraints: If physical samples or materials are available, constraints on their on-site access are described in "WR CMG Sample Distribution Policy" at URL: http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html Use_Constraints: Not suitable for navigation Read and fully comprehend the metadata prior to data use. Acknowledge the U.S. Geological Survey (USGS), the Originator, when using the data set as a source. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Share data products developed using the source data set with the Originator. Data should not be used beyond the limits of the source scale. This information is not intended for navigational purposes. The data set is NOT a survey document and should not be utilized as such. Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Western Coastal & Marine Geology Contact_Person: David Finlayson Contact_Position: Operational Geologist Contact_Address: Address_Type: physical address Address: 400 Natural Bridges Drive City: Santa Cruz State_or_Province: CA Postal_Code: 95062 Country: USA Contact_Voice_Telephone: (831) 427-4757 Contact_Facsimile_Telephone: (831) 427-4748 Contact_Electronic_Mail_Address: dfinlayson@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://walrus.wr.usgs.gov/infobank/s/s709mb/html/s-7-09-mb.index.png Browse_Graphic_File_Description: Illustration of ship tracklines for data collection field activity S-7-09-MB. Browse_Graphic_File_Type: PNG Browse_Graphic: Browse_Graphic_File_Name: http://walrus.wr.usgs.gov/infobank/s/s1009mb/html/s-10-09-mb.index.png Browse_Graphic_File_Description: Illustration of ship tracklines for data collection field activity S-10-09-MB. Browse_Graphic_File_Type: PNG Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3500 Data_Quality_Information: Logical_Consistency_Report: These are raw data with uninterpreted results. for updated on this dataset, search for cruise S-7-09-MB and S-10-09-MB on USGS Coastal & Marine Geology InfoBank, or email: dfinlayson@usgs.gov. Completeness_Report: Completeness_Report Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey, Coastal and Marine Geology Program Publication_Date: 2009 Title: USGS CMG S-7-09-MB Metadata Geospatial_Data_Presentation_Form: Data tables Online_Linkage: http://walrus.wr.usgs.gov/infobank/s/s709mb/html/s-7-09-mb.meta.html Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20090813 Ending_Date: 20090901 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: S-7-09-MB Source_Contribution: Cruise S-7-09-MB contributed swath mapping data from Point Año Nuevo to Table Rock, and a block near Soquel Canyon, in Monterey Bay National Marine Sanctuary. These data are primarily the western 1/3 of the survey area. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey, Coastal and Marine Geology Program Publication_Date: 2009 Title: USGS CMG S-10-09-MB Metadata Geospatial_Data_Presentation_Form: raster digital data Online_Linkage: http://walrus.wr.usgs.gov/infobank/s/s1009mb/html/s-10-09-mb.meta.html Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20091012 Ending_Date: 20091216 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: S-10-09-MB Source_Contribution: Cruise S-10-09-MB contributed swath mapping data to this survey from Table rock to Moss Landing, in Monterey Bay National Marine Sanctuary. This comprised approximately the eastern 2/3 of the survey area. Process_Step: Process_Description: Sound Velocity Measurements Sound velocity profile (SVP) measurements were collected on average every two hours throughout the survey. A total of 440 SVPs were collected for this survey. 114 SVPs were collected during cruise S-7-09-MB and 326 SVPs were collected during S-10-09-MB. In general, SVPs were collected every 2 hours, or when the survey vessel moved to a different survey block. Typically two SVPs were collected every four lines. Water column sound velocity profiles varied significantly throughout the survey, however this frequency of SVP collection was sufficient to correct for variations in sound velocity. Only one line from cruise S-7-09-MB (BlockA_230_044) shows an artifact from an uncorrected sound velocity error (smile), for part of it's length. Insufficient sound velocity data were available to correct this line, and no attempt was made to synthesize data. SVPs were collected with an Applied Micro Systems, SvPlus 3472. This instrument provides time-of-flight sound velocity measurements using invar rods with a sound velocity accuracy of +/- 0.06 m/s, pressure measured by a semiconductor bridge strain gauge to an accuracy to 0.15% (Full Scale) and temperature measured by thermistor to an accuracy of 0.05 C (Applied Microsystems Ltd., 2005). In addition, an Applied Micro Systems Micro SV accurate to +/- 0.03 m/s was deployed on the transducer frame for real-time sound velocity adjustments at the transducer-water interface. Process_Date: 2009 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Coastal and Marine Geology Program Contact_Person: David Finlayson Contact_Address: Address_Type: mailing and physical Address: 400 Natural Bridges Drive City: Santa Cruz State_or_Province: CA Postal_Code: 95060-5792 Country: US Contact_Voice_Telephone: 831-427-4757 Contact_Facsimile_Telephone: 831-427-4748 Contact_Electronic_Mail_Address: dfinlayson@usgs.gov Spatial_Data_Organization_Information: Indirect_Spatial_Reference: The zipped archive contains data tables for each SVP record, and indexes for each cruise, as well as .png thumbnails of plotted svp data. Cruise index files are in comma-separated-value (csv) format, as follows: > Cast,Date,Time,Easting,Northing,Longitude,Latitude,File,Image > 1,10/16/2009,"""15:38""",589233,4088072,-121.9979859,36.93447136,289_153835_SVP001.svp,S-10-09-MB_SVP001.png Data files from each are in text (.svp) format, named by the ordinal date (day of year)_UTCTIME_SVPcast# with internal structure as follows: > [header information example - information varies slightly] > > #DUMP 3472LOG.RAW > #SvPlus S/N 3472 > #New cast started on 08-14-09 at 17:19:02 > #Sample rate is 15 /second > #Depth increment 0.00 > #Sound velocity increment 0.00 > # > #582714.944207046E > #4083519.92296003N > #DateTime,Pressure(dBars),SoundVelocity(m/s),Temperature(C),Battery(Vdc) > > [data record example] > > 08-14-09 17:19:02,0.0,1496.72,15.992,13.15 > . > . > . Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 10 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -123.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 1 Ordinate_Resolution: 1 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Coastal and Marine Geology Program Contact_Person: David Finlayson Contact_Address: Address_Type: mailing and physical address Address: 400 Natural Bridges Drive City: Santa Cruz State_or_Province: CA Postal_Code: 95060-5792 Country: US Contact_Voice_Telephone: 831-427-4757 Contact_Facsimile_Telephone: 831-427-4748 Contact_Electronic_Mail_Address: dfinlayson@usgs.gov Resource_Description: Downloadable Data Distribution_Liability: This information is not intended for navigational purposes. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology. Please recognize the U.S. Geological Survey (USGS) as the source of this information. Physical materials are under controlled on-site access. Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ASC Transfer_Size: 1635.635 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/ds/514/ Fees: none Metadata_Reference_Information: Metadata_Date: 20100504 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Coastal and Marine Geology Program Contact_Person: David Finlayson Contact_Address: Address_Type: mailing and physical address Address: 400 Natural Bridges Drive City: Santa Cruz State_or_Province: CA Postal_Code: 95060-5792 Country: US Contact_Voice_Telephone: 831-427-4757 Contact_Facsimile_Telephone: 831-427-4748 Contact_Electronic_Mail_Address: dfinlayson@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile